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