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