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)(17,18,23,25)(19,24,28,21)(20,26,30,32)(22,31,29,27)(33,34,39,37)(35,43,46,40)(36,47,45,41)(38,42,44,48)(1,3,7,6)(2,8,9,16)(4,12,11,14)(5,15,10,13)(17,19,23,28)(18,24,25,21)(20,29,30,22)(26,27,32,31)(33,35)(34,40)(36,44)(37,43)(38,45)(39,46)(41,48)(42,47)(2,9)(4,11)(8,16)(12,14)(18,25)(19,28)(20,30)(27,31)(33,34,39,37)(35,40,46,43)(36,41,45,47)(38,42,44,48)(1,4,7,11)(2,10,9,5)(3,12,6,14)(8,13,16,15)(17,20)(18,26)(19,29)(21,31)(22,28)(23,30)(24,27)(25,32)(33,36,39,45)(34,41,37,47)(35,44,46,38)(40,48,43,42)(1,5,7,10)(2,11,9,4)(3,13,6,15)(8,12,16,14)(17,21)(18,19)(20,31)(22,32)(23,24)(25,28)(26,29)(27,30)(33,37,39,34)(35,40,46,43)(36,47,45,41)(38,42,44,48)(1,6,7,3)(2,8,9,16)(4,14,11,12)(5,15,10,13)(17,22,23,29)(18,27,25,31)(19,20,28,30)(21,26,24,32)(33,38,39,44)(34,42,37,48)(35,45,46,36)(40,47,43,41)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.