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