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