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