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