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)(18,19)(22,23) involution — undirected(6,8)(10,14)(12,15)(17,18,21,19)(20,23,24,22)(5,6)(7,8)(10,14)(11,16)(18,19)(22,23) involution — undirected(1,2)(3,4)(9,11)(10,12)(13,16)(14,15)(17,19,21,18)(20,23,24,22)(9,12)(10,11)(13,15)(14,16)(17,20,21,24)(18,22,19,23)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.