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)(33,34,39,38)(35,42,37,40)(36,41,46,45)(43,48,44,47)(2,3)(7,9)(8,10)(14,15)(17,18)(19,26)(20,23)(21,24)(22,25)(27,31)(28,29)(30,32)(33,35,39,37)(34,40,38,42)(36,44,46,43)(41,48,45,47)(1,2,6,3)(4,7,12,9)(5,8,13,10)(11,14,16,15)(17,19,22,24)(18,21,25,26)(20,28,30,27)(23,31,32,29)(33,36,39,46)(34,41,38,45)(35,43,37,44)(40,47,42,48)(1,3,6,2)(4,9,12,7)(5,10,13,8)(11,15,16,14)(17,18)(19,21)(20,23)(22,25)(24,26)(27,29)(28,31)(30,32)(33,37,39,35)(34,42,38,40)(36,44,46,43)(41,48,45,47)(1,4,6,12)(2,7,3,9)(5,11,13,16)(8,14,10,15)(17,20,22,30)(18,23,25,32)(19,27,24,28)(21,29,26,31)(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,21)(18,24)(19,25)(20,29)(22,26)(23,28)(27,32)(30,31)(33,38,39,34)(35,42,37,40)(36,45,46,41)(43,48,44,47)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.