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