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