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