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