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