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