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