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)(21,22,25,27)(23,29,33,35)(24,34,30,28)(26,31,36,32)(7,13)(8,16)(10,17)(11,15)(21,23,30,31,25,33,24,32)(22,26,34,35,27,36,28,29)(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)(23,31)(24,30)(26,35)(28,34)(29,36)(32,33) involution — undirected(5,8,9,16)(6,11,12,15)(7,14,13,19)(10,18,17,20)(22,27)(26,36)(28,34)(29,35)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.