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