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