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