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