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)(19,25)(20,24)(21,22)(23,26)(27,32)(28,31)(29,30)(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)(19,26)(23,25)(27,28)(31,32)(33,35)(34,39)(36,43)(37,42)(38,44)(40,48)(41,45)(46,47)(2,6)(4,13)(5,10)(11,16)(17,19,22,26)(18,23,21,25)(20,28,30,27)(24,32,29,31)(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)(17,20,22,30)(18,24,21,29)(19,27,26,28)(23,31,25,32)(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)(17,19)(18,25)(20,28)(21,23)(22,26)(24,31)(27,30)(29,32)(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)(17,21,22,18)(19,23,26,25)(20,29,30,24)(27,31,28,32)(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.