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