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