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