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