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