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