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