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