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