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