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