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