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