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