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