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