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