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