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