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