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