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