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