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