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