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