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