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