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