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