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