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