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