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