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