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