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)(22,29)(23,28)(24,30)(25,34)(26,39)(32,44)(33,47)(35,43)(36,42)(38,41)(40,45)(46,48) involution — undirected(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,19,22,34,24,36,23,35)(18,25,28,31,30,43,29,42)(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)(27,29)(28,37)(30,45)(31,46)(33,35)(34,48)(36,38)(42,47)(43,44)(1,4,5,13)(2,7,8,16)(3,10,11,12)(6,14,9,15)(17,21,24,20)(18,27,30,37)(19,33,36,48)(22,39,23,40)(25,41,43,44)(26,28,45,29)(31,47,42,46)(32,34,38,35)(2,8)(6,9)(7,16)(14,15) 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.