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