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