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