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