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