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