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