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