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