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