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