One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(5,6,10,16,11,15,9,14)(7,17,19,27,21,30,20,12)(8,22,25,29,24,28,23,13)(18,26,33,31,34,36,35,32)(1,3,4,2)(5,7,10,20,11,21,9,19)(6,12,14,17,15,27,16,30)(8,18,23,33,24,34,25,35)(13,26,22,32,29,36,28,31)(2,3)(5,8,9,23,11,24,10,25)(6,13,14,28,15,29,16,22)(7,18,19,33,21,34,20,35)(12,26,17,31,27,36,30,32)(5,8)(6,13)(7,18)(9,25)(10,23)(11,24)(12,26)(14,22)(15,29)(16,28)(17,32)(19,35)(20,33)(21,34)(27,36)(30,31) 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.