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