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