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