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