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