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