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