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