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