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