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