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