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)(17,18,23,26)(19,24,21,20)(22,30,31,25)(27,28,29,32)(6,8)(9,10,12,14)(11,15,16,13)(17,19,23,21)(18,20,26,24)(22,29,31,27)(25,32,30,28)(5,6)(7,8)(9,10,12,14)(11,13,16,15)(17,20)(18,19)(21,26)(22,28)(23,24)(25,27)(29,30)(31,32)(1,2,3,4)(9,10)(11,15)(12,14)(13,16)(17,21,23,19)(18,24,26,20)(22,27,31,29)(25,28,30,32)(9,11)(10,13)(12,16)(14,15)(17,22,23,31)(18,25,26,30)(19,27,21,29)(20,28,24,32)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.