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)(33,34,40,44)(35,39,37,42)(36,43,38,41)(45,48,46,47)(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)(34,39)(36,46)(37,40)(38,45)(41,48)(42,44)(43,47)(2,7)(3,10)(9,16)(11,13)(20,29)(24,28)(27,30)(31,32)(33,36,40,38)(34,41,44,43)(35,45,37,46)(39,47,42,48)(1,3)(2,8)(4,7)(5,13)(6,10)(9,12)(11,15)(14,16)(17,20)(18,24)(19,27)(21,30)(22,29)(23,31)(25,28)(26,32)(33,37,40,35)(34,42,44,39)(36,45,38,46)(41,47,43,48)(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)(33,38,40,36)(34,43,44,41)(35,45,37,46)(39,47,42,48)(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)(33,39,40,42)(34,37,44,35)(36,47,38,48)(41,46,43,45)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.