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