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