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