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