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