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