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