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