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