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