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