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)(28,29)(30,31)(32,36)(33,35)(5,7,9,14)(6,10,13,11)(8,17,18,15)(12,20,16,19)(21,22,26,31)(23,32,34,28)(24,27,25,30)(29,35,36,33)(1,2,3,4)(5,7)(6,11)(8,15)(9,14)(10,13)(12,20)(16,19)(17,18)(21,23,26,34)(22,28,31,32)(24,35,25,33)(27,29,30,36)(7,14)(10,11)(15,17)(19,20)(21,23)(22,29)(24,33)(25,35)(26,34)(27,28)(30,32)(31,36) involution — undirected(5,8,9,18)(6,12,13,16)(7,15,14,17)(10,19,11,20)(21,24,26,25)(22,30,31,27)(23,33,34,35)(28,29,32,36)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.