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