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