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