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