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