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