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