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