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