This is a question so vague that it is difficult to answer. Really, it depends: on the kinds of jobs they’re applying to, on which hiring managers are seeing their application, on the internships and skills they’ve acquired in college, on who they compete with in the market.
Majors typically require around 40 hours a piece to complete, and there’s little to no overlap in the three majors listed. 40 x 3 is 120, which is usually the total number of hours required for a bachelor’s degree. So a student who is triple-majoring like this is either overloading like crazy or they are taking longer than four years to graduate. Neither is inherently bad.
Personally, I would regard a triple major as a student who lacks focus or has a problem with indecisiveness, maybe even an issue with being creative about how to pursue interests outside of the narrow confines of prescribed courses of study. Professionally, that wouldn’t matter - I’d be more interested in what the student brings to the table. Did they blend those majors and their interests in interesting ways (e.g., interested in social/political policy surrounding tech and information science? Interested in managing within the tech world)? What kind of internships or part-time jobs have the held? What skills do they know - do they know SQL, Python, statistics, R? And what kind of job am I hiring them for? Which skills I value are going to be different when considering them for an entry-level program manager at a tech company vs. an entry-level IT person at an insurance company vs. an analyst at a think tank.
So basically…the same as a single or double major.