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