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