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