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