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