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