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