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