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