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