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