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