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