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