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)(22,26)(24,27)(28,32)(29,33)(31,34)(35,36)(5,7)(6,10)(8,14)(9,13)(11,18)(12,17)(15,20)(16,19)(21,22,27,33,25,29,24,26)(23,28,34,36,30,35,31,32)(2,4)(7,13)(10,17)(14,19)(18,20)(21,23)(22,28)(24,31)(25,30)(26,32)(27,34)(29,35)(33,36) involution — undirected(7,13)(10,17)(14,19)(18,20)(23,30)(28,35)(31,34)(32,36) involution — undirected(5,8,9,16)(6,11,12,15)(7,14,13,19)(10,18,17,20)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.