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