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