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