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