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