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