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