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