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