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