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