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