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