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