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