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