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