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