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