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