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