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