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