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