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