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