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