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