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