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