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