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