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