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