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