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