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