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