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