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)(21,22,26,30)(23,25,29,27)(24,32,34,28)(31,35,36,33)(1,2,3,4)(5,7)(6,11)(8,14)(9,15)(10,13)(12,18)(16,20)(17,19)(21,23)(22,27)(24,31)(25,30)(26,29)(28,35)(32,33)(34,36)(7,13)(11,14)(15,19)(18,20)(21,24,26,34)(22,28,30,32)(23,31,29,36)(25,33,27,35)(5,7)(6,11)(8,14)(9,15)(10,13)(12,18)(16,20)(17,19)(21,24)(22,28)(23,31)(25,33)(26,34)(27,35)(29,36)(30,32) involution — undirected(5,8,10,6)(7,14,13,11)(9,12,17,16)(15,18,19,20)(21,23)(22,25)(24,31)(26,29)(27,30)(28,33)(32,35)(34,36)(5,9,10,17)(6,12,8,16)(7,15,13,19)(11,18,14,20)(21,25)(22,29)(23,30)(24,33)(26,27)(28,36)(31,32)(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.