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