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