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