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