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)(13,14,18,16)(15,19,17,20)(21,22,26,24)(23,29,30,27)(25,32,33,28)(31,34,36,35)(5,7,10,9)(6,11,8,12)(13,15,18,17)(14,19,16,20)(22,24)(23,30)(28,32)(31,36)(5,6,10,8)(7,12,9,11)(13,16,18,14)(15,19,17,20)(21,23,26,30)(22,27,24,29)(25,31,33,36)(28,34,32,35)(1,2)(3,4)(5,8,10,6)(7,11,9,12)(21,24,26,22)(23,29,30,27)(25,28,33,32)(31,34,36,35)(5,9,10,7)(6,11,8,12)(13,17,18,15)(14,19,16,20)(21,25,26,33)(22,28,24,32)(23,31,30,36)(27,34,29,35)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.