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