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