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