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