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