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