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