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