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