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