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