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)(20,27)(21,32)(22,28)(23,26)(24,31)(25,30)(9,10)(11,14)(12,16)(13,15)(17,19,22,31)(18,24,28,29)(20,21,30,23)(25,32,27,26)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,20,23,19,22,30,21,31)(18,25,26,24,28,27,32,29)(1,3,4,7)(2,6,5,8)(9,11,13,12)(10,14,15,16)(17,21,22,23)(18,26,28,32)(19,30,31,20)(24,25,29,27)(9,12,13,11)(10,14,15,16)(17,20,21,31,22,30,23,19)(18,27,32,24,28,25,26,29)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.