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