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