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