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