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