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