One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10)(11,15)(12,13)(14,16)(17,18,22,28)(19,27,32,25)(20,34,36,45)(21,39,33,42)(23,30,24,29)(26,38,44,37)(31,47,48,43)(35,46,40,41)(2,5)(6,7)(9,10)(11,14)(12,13)(15,16)(17,19,22,32)(18,25,28,27)(20,35,36,40)(21,24,33,23)(26,43,44,47)(29,39,30,42)(31,38,48,37)(34,41,45,46)(10,13)(14,15)(17,20,24,38,22,36,23,37)(18,26,30,45,28,44,29,34)(19,31,21,40,32,48,33,35)(25,41,39,47,27,46,42,43)(9,11,12,16)(10,14,13,15)(17,21,24,32,22,33,23,19)(18,27,30,42,28,25,29,39)(20,35,38,31,36,40,37,48)(26,41,45,47,44,46,34,43)(1,3,4,8)(2,6,5,7)(18,28)(20,36)(25,27)(29,30)(31,48)(35,40)(37,38)(39,42)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.