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