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