One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10,13,12)(11,14,16,15)(17,18,21,24)(19,25,27,23)(20,22,30,31)(26,28,29,32)(1,2,4,5)(3,6,7,8)(9,11,13,16)(10,14,12,15)(17,19,21,27)(18,23,24,25)(20,29,30,26)(22,28,31,32)(2,5)(6,8)(9,10,13,12)(11,15,16,14)(17,20,22,24,21,30,31,18)(19,26,28,23,27,29,32,25)(1,3,4,7)(2,6,5,8)(18,24)(19,27)(20,30)(28,32)(9,12,13,10)(11,14,16,15)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.