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