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