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