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