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