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