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