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