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