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