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