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