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