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