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