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