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