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