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