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