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