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)(11,16)(12,14)(13,15)(17,18)(19,25)(20,29)(21,23)(22,28)(24,27)(26,31)(30,32)(2,6)(7,8)(11,12)(14,16)(19,26)(22,30)(25,31)(28,32) involution — undirected(1,3,5,4)(2,7,6,8)(9,11,13,12)(10,14,15,16)(17,19,27,32,21,26,20,28)(18,22,29,31,23,30,24,25)(9,12,13,11)(10,14,15,16)(1,4,5,3)(2,8,6,7)(10,15)(14,16)(18,23)(19,26)(24,29)(28,32)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.