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