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