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