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