One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(6,7)(10,13)(14,16)(26,30)(27,28) involution — undirected(1,2,5,4)(3,6,8,7)(10,13)(14,16)(17,18,20,22)(19,21,23,24)(25,26)(27,31)(28,32)(29,30)(9,10)(11,14)(12,13)(15,16)(17,18)(19,21)(20,22)(23,24) involution — undirected(1,3,5,8)(2,6,4,7)(9,10)(11,14)(12,13)(15,16)(25,27,29,28)(26,31,30,32)(1,4,5,2)(3,7,8,6)(9,11,12,15)(10,14,13,16)(17,19,20,23)(18,21,22,24)(25,28,29,27)(26,32,30,31)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.