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