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