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