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