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