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