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