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