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