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