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