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