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