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