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