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