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)(11,16)(12,13)(14,15)(18,22)(20,24)(27,31)(29,32)(1,2)(3,4)(5,6)(7,8)(10,15)(11,12)(18,22)(20,24)(25,26,28,30)(27,29,31,32)(2,6)(4,7)(9,11,14,12)(10,16,15,13)(17,18,21,22)(19,20,23,24)(1,3)(2,7)(4,6)(5,8)(9,12,14,11)(10,13,15,16)(17,19,21,23)(18,20,22,24)(25,27)(26,29)(28,31)(30,32)(1,4,5,7)(2,8,6,3)(9,13)(10,12)(11,15)(14,16)(17,20)(18,23)(19,22)(21,24)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.