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