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