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