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