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