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