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)(11,14)(12,13)(15,16)(17,18,21,22)(19,23,24,20)(25,26)(27,28)(29,31)(30,32)(2,5)(6,8)(9,10,13,12)(11,14,15,16)(17,19,21,24)(18,20,22,23)(25,27,30,31)(26,29,32,28)(3,7)(6,8)(10,12)(14,16)(19,24)(20,23)(25,28,30,29)(26,27,32,31)(1,2)(3,8)(4,5)(6,7)(9,11)(10,14)(12,16)(13,15)(17,18)(19,23)(20,24)(21,22)(25,29,30,28)(26,31,32,27)(1,3,4,7)(2,6,5,8)(9,12,13,10)(11,14,15,16)(17,20,21,23)(18,19,22,24)(25,26)(27,29)(28,31)(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.