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