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