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