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