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