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