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