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