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)(11,12)(13,14)(15,16)(17,18)(19,23)(20,27)(21,22)(24,28)(25,29)(26,32)(30,31) involution — undirected(1,2,4,6)(3,5,8,7)(9,10)(11,16)(12,15)(13,14)(19,25)(23,29)(26,31)(30,32)(1,2,4,6)(3,5,8,7)(10,14)(11,15)(18,22)(23,29)(24,27)(30,32)(1,2)(3,5)(4,6)(7,8)(9,10,13,14)(11,12,15,16)(17,18)(19,23)(20,24)(21,22)(25,29)(26,30)(27,28)(31,32)(1,2)(3,7)(4,6)(5,8)(9,11)(10,12)(13,15)(14,16)(17,19)(18,23)(20,26)(21,25)(22,29)(24,30)(27,32)(28,31) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,12)(10,15)(11,14)(13,16)(17,20)(18,24)(19,26)(21,28)(22,27)(23,30)(25,31)(29,32) 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.