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