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