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