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