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