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