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