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