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