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