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