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