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