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