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