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