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