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