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