Are there any resumé revision services available for PhD applicants?
Yes, literally hundreds. Have you googled something like "professional resume for phd application" or "professional resume writing services"? You are bound to find something near where you live, including quite possibly your undergrad university.

The big question, I think, is whether for a PhD application you should be supplying a resume or a curriculum vitae? CV's are usually more common for academic and research positions. If you are unsure about the differences, here are a couple of useful links.

Good luck with the application.