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