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