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