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)(11,16)(12,15)(13,14)(17,18,21,19)(20,23,24,22)(25,26,29,27)(28,30,32,31)(1,3,5,4)(2,6,7,8)(9,10,14,13)(11,15,12,16)(25,27,29,26)(28,30,32,31)(9,11,14,12)(10,15,13,16)(17,19,21,18)(20,23,24,22)(25,28)(26,30)(27,31)(29,32)(1,4,5,3)(2,6,7,8)(9,12,14,11)(10,15,13,16)(17,20)(18,22)(19,23)(21,24)(1,2)(3,6)(4,8)(5,7)(9,13,14,10)(11,16,12,15)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.