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