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