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