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