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