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