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