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