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