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