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