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