One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,12)(4,10)(5,13)(6,8)(7,9)(11,15)(14,16)(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)(1,3,7,6)(2,8,9,12)(4,13,14,11)(5,10,15,16)(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)(2,9)(4,14)(8,12)(11,13)(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)(3,11)(5,8)(6,13)(7,14)(9,16)(12,15)(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)(2,11)(3,10)(4,8)(6,16)(7,15)(9,13)(12,14)(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)(1,6,7,3)(2,8,9,12)(4,11,14,13)(5,10,15,16)(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.