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