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