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