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