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