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