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