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