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