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