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