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)(17,18,21,23,22,26,31,25)(19,27,28,32,30,20,29,24)(1,2,4,7,5,8,11,9)(3,6,12,10,13,15,14,16)(18,23,26,25)(19,28,30,29)(1,2)(3,6)(4,7)(5,8)(9,11)(10,12)(13,15)(14,16)(17,19,22,30)(18,24,26,32)(20,25,27,23)(21,29,31,28)(1,3,11,14,5,13,4,12)(2,6,9,16,8,15,7,10)(17,20,21,24,22,27,31,32)(18,19,25,29,26,30,23,28)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.