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