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