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