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