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