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