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