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