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