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