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