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