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