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