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