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