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