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