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