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