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