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