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