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