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