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