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