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