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