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