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