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