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