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