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