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