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