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