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)(11,14)(12,16)(13,15)(17,18,21,25)(19,27,28,24)(20,22,26,23)(29,32,30,31)(1,3,5,4)(2,6,8,7)(9,11,14,10)(12,16,13,15)(17,19,21,28)(18,24,25,27)(20,31,26,32)(22,30,23,29)(10,11)(15,16)(17,20,22,25,21,26,23,18)(19,27,29,31,28,24,30,32)(9,12,14,13)(10,15,11,16)(17,20,22,25,21,26,23,18)(19,24,29,32,28,27,30,31)(1,4,5,3)(2,7,8,6)(9,13,14,12)(10,16,11,15)(18,25)(20,26)(24,27)(31,32)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.