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