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