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