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