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