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