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