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