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