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