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