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