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