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