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