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