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