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