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