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