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