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