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