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