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