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