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