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