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