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