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