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