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