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