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