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