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