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