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