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