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