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