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