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