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