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