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