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