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