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