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