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