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