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