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