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