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