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