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