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