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