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