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