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)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,18)(19,22)(20,23)(21,24) involution — undirected(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,19,21,20)(18,22,24,23)(1,3,5,4)(2,7,6,8)(10,14)(13,15)(18,23)(19,20)(22,24)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(17,19,21,20)(18,22,24,23)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.