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