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