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