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