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