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