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