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