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