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