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