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