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