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