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