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