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