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