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