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