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