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