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