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