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