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