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