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