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