One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,24,26)(19,22,21,23)(20,25,31,28)(27,30,32,29)(1,2)(3,4)(9,11,12,15)(10,13,14,16)(17,19,22,26,24,21,23,18)(20,28,29,27,31,25,30,32)(2,4)(10,14)(13,16)(17,20,24,31)(18,25,26,28)(19,27,21,32)(22,30,23,29)(6,8)(17,21,23,26,24,19,22,18)(20,25,30,27,31,28,29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.