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