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