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