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