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