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