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