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