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