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