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