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