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)(21,22,28,32)(23,25,30,36)(24,26,31,27)(29,34,35,33)(1,2,3,4)(5,7)(6,10)(8,14)(9,13)(11,17)(12,18)(15,20)(16,19)(21,23,27,34,28,30,26,33)(22,29,31,36,32,35,24,25)(6,11)(7,13)(12,15)(14,19)(21,24,27,22,28,31,26,32)(23,25,34,29,30,36,33,35)(7,13)(10,17)(14,19)(18,20)(21,25)(22,30)(23,32)(24,34)(26,35)(27,29)(28,36)(31,33) involution — undirected(5,8,9,16)(6,12,11,15)(7,14,13,19)(10,18,17,20)(21,26,28,27)(22,31,32,24)(23,33,30,34)(25,29,36,35)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.