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