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