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)(11,16)(12,15)(13,14)(17,18,23,22)(19,24,27,28)(20,25,29,30)(21,31,32,26)(1,3,5,4)(2,6,8,7)(9,10)(11,16)(12,15)(13,14)(17,19,23,27)(18,24,22,28)(20,26,29,31)(21,30,32,25)(1,3,5,4)(2,7,8,6)(10,14)(15,16)(17,20,23,29)(18,25,22,30)(19,26,27,31)(21,28,32,24)(9,11,13,12)(10,15,14,16)(17,21,18,26,23,32,22,31)(19,20,28,25,27,29,24,30)(1,4,5,3)(2,7,8,6)(9,12,13,11)(10,15,14,16)(20,29)(21,32)(25,30)(26,31)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.