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