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