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