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