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