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