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