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