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