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