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