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