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