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