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