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)(17,18,23,25,22,20,21,30)(19,26,29,32,28,24,27,31)(2,5)(3,7)(9,11,12,15)(10,13,14,16)(17,19)(18,24)(20,26)(21,27)(22,28)(23,29)(25,31)(30,32)(10,14)(11,15)(17,20,23,30,22,18,21,25)(19,26,29,32,28,24,27,31)(1,3,4,7)(2,6,5,8)(10,14)(13,16)(17,21,22,23)(18,25,20,30)(19,27,28,29)(24,31,26,32)(2,5)(6,8)(18,20)(19,28)(25,30)(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.