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