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