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