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