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