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