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