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)(21,22,26,29,25,28,34,36)(23,24,31,33,30,32,27,35)(5,7)(6,10)(8,14)(9,15)(11,17)(12,13)(16,20)(18,19)(21,23,26,31,25,30,34,27)(22,24,29,33,28,32,36,35)(2,4)(5,8,9,16)(6,11,12,18)(7,14,15,20)(10,17,13,19)(21,24)(22,27)(23,29)(25,32)(26,33)(28,31)(30,36)(34,35)(7,15)(10,13)(14,20)(17,19) involution — undirected(6,12)(10,13)(11,18)(17,19)(23,30)(24,32)(27,31)(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.