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