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