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