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