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