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