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