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