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