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