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