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