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