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