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